单电机强混合动力电动车辆的动态协调控制

摘要

For reducing the shock in powertrain of a full hybrid electric vehicle with single motor during the mode switching between pure electric drive and engine drive, a torque coordinated control strategy for engine start process and a torque compensation control strategy for engine stop period are proposed. The torque coordinated control strategy consists of engine start resistance compensation control in start mode and engine torque overshoot balance control in regulating mode, while the torque compensation control strategy uses the motor to compensate the torque change of powertrain in engine stop process. The results of bench and real vehicle tests show that the dynamic coordinated control strategy can ensure a quick and smooth engine start and an engine stop without shock in power-train.%为减小或消除单电机式强混合动力电动车辆在纯电动模式与发动机驱动模式间切换时产生的动力系统冲击,提出了发动机起动过程的转矩协调控制策略和发动机退出过程的转矩补偿控制策略.转矩协调控制策略包括起动模式下的发动机起动阻力转矩补偿控制和调节模式下的发动机过冲转矩平衡控制,转矩补偿控制策略利用电机补偿发动机退出过程中动力系统转矩的变化.台架和实车试验结果表明了该动态协调控制策略可确保发动机的快速平稳起动和发动机退出时不产生动力系统冲击.